báo cáo thí nghiệm mạch điện tử 2
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BÁO CÁO THÍ NGHIỆM MẠCH ĐIỆN TỬ 2
Bài 1:KHẢO SÁT ĐÁP ỨNG TẦN SỐ THẤP CỦA MẠCH KHUẾCH ĐẠI GHÉP RC
A: Dùng BJT:
I.Cho sơ đồ như hình vẽ:
Hình 1: sơ đồ và biểu đồ Bode Av
II. Tính toán lý thuyết:
1.Mạch tương đương tín hiệu nhỏ tần số thấp:
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2. Tính độ lợi Av=Vo/Vi:
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3.Tính f cắt:
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4.Bode Av:
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B:Dùng FET:
I.Cho mạch như hình vẽ:
Hình 2: sơ đồ và biểu đồ Bode Av
II. Tính toán lý thuyết:
1.Mạch tương đương tín hiệu nhỏ tần số thấp:
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2. Tính độ lợi Av=Vo/Vi:
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3.Tính f cắt:
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4.Bode Av:
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BÀI 2: KHẢO SÁT ĐÁP ỨNG TẦN SỐ CAO CỦA MẠCH KHUẾCH
ĐẠI GHÉP RC
A: Dùng BJT:
I.Cho sơ đồ như hình vẽ:
Hình 3: sơ đồ và biểu đồ Bode Av
II. Tính toán lý thuyết:
1.Mạch tương đương tín hiệu nhỏ tần số cao :
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2. Tính độ lợi Av=Vo/Vi:
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3.Tính f cắt:
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4.Bode Av:
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B: Dùng FET:
I.Cho sơ đồ như hình vẽ:
Hình 4: sơ đồ và biểu đồ Bode Av
II. Tính toán lý thuyết:
1.Mạch tương đương tín hiệu nhỏ tần số cao :
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2. Tính độ lợi Av=Vo/Vi:
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3.Tính f cắt:
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4.Bode Av:
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